64. The Rabbi
Best-known episode: "The Postponement"
The rabbi in Elaine's apartment building is probably an excellent spiritual advisor — but avoid telling him your secrets. In Season Seven's "The Postponement," the rabbi (identified as Rabbi Kirschbaum or Rabbi Glickman at different times during Seinfeld's run) ruins Elaine's life by spilling her darkest confessions, including the crush she has on a neighbor and her belief that George is a loser. (Well, maybe that last admission wasn't so surprising.) Police Academy alum Bruce Mahler made the character's hilariously nasal pronunciation of "Eeeee-lane" nebbish-y perfection. TIM GRIERSON